基于EBCOT的滤波器组非八度可扩展编码及其性能评价研究

IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004. Pub Date : 2004-10-26 DOI:10.1109/ISCIT.2004.1413835

T. Nakachi, T. Sawabe, J. Suzuki, T. Fujii

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引用次数: 3

摘要

JPEG2000是静止图像压缩的国际标准，具有编码性能高、统一无损/有损压缩、分辨率可扩展性和信噪比可扩展性等特点。分辨率可伸缩性是一个特别有前途的特性。不幸的是，当前分辨率可伸缩性的实现仅限于2的幂。我们提出非八度可扩展编码。实现了两种类型的非八度可伸缩编码。一种基于DCT滤波器组，另一种使用小波变换。后一种模型与JPEG2000兼容，第2部分。利用该算法，可以从压缩的比特流中解码各种分辨率的图像。实验结果表明了该算法的有效性。

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A study on non-octave scalable coding with filter bank and its performance evaluation using EBCOT

JPEG2000, an international standard for still image compression, has various features, such as high coding performance, unified lossless/lossy compression, resolution scalability and SNR scalability. Resolution scalability is an especially promising feature. Unfortunately, the current implementation of resolution scalability is restricted to powers of two. We propose non-octave scalable coding. Two types of non-octave scalable coding are implemented. One is based on a DCT filter bank and the other uses a wavelet transform. The latter model is compatible with JPEG2000, part 2. By using the proposed algorithm, images of various resolutions can be decoded from a compressed bit stream. Experimental results show the effectiveness of the proposed algorithm.

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IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004.

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